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646 Kastalia (A907 RL)
Classification: Main-belt Asteroid          SPK-ID: 2000646
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2133229742202656 8.2836e-09  
a 2.325134902005805 4.9892e-09 au
q 1.829130209246581 2.0352e-08 au
i 6.902825098989661 2.8756e-07 deg
node 302.8035540352192 1.6463e-06 deg
peri 37.94817934183983 5.246e-06 deg
M 351.454374019757 6.9826e-06 deg
tp 2459231.240578773695
(2021-Jan-16.74057877)
2.5171e-05 TDB
period 1295.002657981489
3.55
4.1681e-06
1.141e-08
d
yr
n .2779917074155889 8.9475e-10 deg/d
Q 2.82113959476503 6.0535e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2959  
   data-arc span      41360 days (113.24 yr)  
   first obs. used      1907-09-11  
   last obs. used      2020-12-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41112  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 11:13:28  

Additional Information
 Earth MOID = .823876 au 
 Jupiter MOID = 2.58477 au 
 T_jup = 3.535 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.61   n/a MPCxxxxx  
diameter diameter 8.153 km 0.151 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 3.1259 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Behrend, R. (2017) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Pilcher, F. (2018) Minor Planet Bull. 45, 55-56.]
geometric albedo albedo 0.269   0.056 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

646 Kastalia (A907 RL)          Discovered 1907-Sep-11 by Kopff, A. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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